18994840

素因数分解:

$2^3\times 5^1\times {\mathrm{577}}^1\times {\mathrm{823}}^1$

素因数の和:1411

約数の個数: 32

約数和(自身を含む): 42864480

約数和(自身を除く): 23869640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 577, 823, 1154, 1646, 2308, 2885, 3292, 4115, 4616, 5770, 6584, 8230, 11540, 16460, 23080, 32920, 474871, 949742, 1899484, 2374355, 3798968, 4748710, 9497420, 18994840]

約数ペア:

[(1, 18994840), (2, 9497420), (4, 4748710), (5, 3798968), (8, 2374355), (10, 1899484), (20, 949742), (40, 474871), (577, 32920), (823, 23080), (1154, 16460), (1646, 11540), (2308, 8230), (2885, 6584), (3292, 5770), (4115, 4616)]